Originally Posted by CossieRich
All this closed loop fuelling.
I have a Stu chip running my greys on a L6 with no closed loop obviously. Me and Mark saw 14.6:1 on the afr monitor whilst off boost cruising. Is there really ANY need to go closed loop if that is the results on a Non-closed loop fuelling setup?
but your ecu does not have any feedback to make adjustments if something goes slightly out of tune (voltage, fuel pressure etc)